Acta Cryst. (2005). E61, m263-m264  [ doi:10.1107/S1600536804034233 ]

catena-Poly[[tetraaquacadmium(II)--hexane-1,6-diamine-²N:N'] terephthalate dihydrate]

X.-G. Meng and Z.-D. Lin

Abstract: The title compound, {[Cd(C₆H₁₆N₂)(H₂O)₄](C₈H₄O₄)·2H₂O}_n, (I), exhibits a chain structure. The central Cd^II ion is coordinated by four water molecules and two N atoms derived from two 1,6-diaminohexane molecules, giving a zigzag-shaped polymeric chain with a [Cd-N-C-C-C-C-C-C-N]_n backbone running parallel to the b axis. The two independent terephthalate anions are not coordinated to cadmium(II), acting rather as counter-ions. Each coordinated water molecule forms strong O-HO hydrogen bonds with the adjacent terephthalate counter-ions, forming a three-dimensional hydrogen-bonded supramolecular architecture.

Online 15 January 2005

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